The substance contained in the deep reaches of the mysterious wang spheres (balls/testicles), only to be let out via great excitement. i.e. ejaculate... cum, jizz, spunk, love-sauce, baby-gravy...

"Brb, I am gonna go get a glass of lemonade."
"How about instead you have a nice big gulp of my delicious wang-o-nade?"
or...
The girl was very pretty, so of course he could not help himself from suddenly producing a significant amount of wang-o-nade... right into his new pair of pants.